Corporation stop and tool



y 1941 w. J. BOWAN 2,247,428

CORPORATION STOP AND TOOL Filed Oct. 15, less I Maker J 430m Patented July 1, 1941 grim-2s terse 2,247,428 CORPORATION STOP AND 'roor.

Walter J. Bowan, Decatur, Ill., assignor to Mueller 00., Decatur, 111., a corporation of Illinois Application October 15, 1938, Serial No. 235,247

4 Claims.

This invention relates to a corporation stop and to a tool for turning corporation stops to or from position. While the particular tool and stop to be hereinafter described cooperate most effectively, they may be used independently, that is to say, the stop may be inserted or removed by other tools and the tool may be used for the insertion or removal of other designs of stops.

The usual corporation stop comprises a. body and threaded nipples projecting from opposite ends of the body, the body constituting a valve housing. One of the nipples is designed to be threaded in an aperture in a main and the other, which is the outlet nipple, is designed to receive a coupling. In the usual inserting operation, for example, a tool is threaded on the outlet nipple until it jams, thus enabling rotation of the tool to be imparted to the stop. Due to this jamming the stop sometimes follows the tool when it is sought to remove the latter by reverse rotation, and frequently, moreover, the nipple is injured. It is an object of the present invention to avoid this jamming by transmitting rotation of the tool directly to the stop body, the nipple itself taking no part in torque transmission and'serving merely to hold the stop and tool together during insertion.

In the accompanying drawing I have shown, by way of example, two forms which the new tool may take and also a new form of stop body particularly adapted for cooperation with the new tool and tools of similar type: I shall describe the invention with reference to this drawing in which Figure 1 shows an elevation of one form of the new tool applied to the improved stop, a portion of a main being shown in cross section,

Figure 2 is a section substantially'on line 22 of Figure 1.

Figure 3 is a section substantially on line 33 of Figure 2.

Figure 4 is an axial section of the second form of tool.

Figure 5 is an elevation of the tool'of Figure4 partly in section and partly broken away, and

Figure 6 is an elevation of the tool of Figures 4 and 5 as seen from the left of these figures.

Referring to the drawing, and first to Figures 1, 2 and 3, reference numeral l designates generally the stop and reference numeral II the tool. The stop Ill comprises a body l0 housing a plug l2 which controls flow through the stop. Nipples I3 and I4 project from opposite ends of the body it), the first being designed for threading in an aperture l of a main l6 and the sec- 0nd being primarily designed for the reception of a coupling. At the base of the nipple I4 the body is somewhat laterally expanded transversely of the plug axis to provide shoulders as at H lying in a common plane and these shoulders are provided with diametrically opposed recesses I3 and I9 which are open toward the nipple I l and each of which has parallel axially extending lateral walls, as at 2| and 22, Figure 1. The shoulders surmount flat parallel lateral faces of the stop body.

The tool H comprises a shank 23 designed for reception in the socket of the usual boring bar. At one end of the shank is a head 24, which, as here shown, is cylindrical and is integral with the shank and eccentrically disposed relative to the axis of the latter. The axis of the head 24 is parallel to the axis of the shank.

In the head 24 is formed a threaded socket 25 which is coaxial with the shank 23. Due to the eccentricity of the head relative to the shank and the coaxial disposition of the socket relative to the shank, the outer face of the head is in the form of a rim 25 of varying radial width. At or about the widest part of the ring 26 it is provided with a bore 21 parallel to the tool axis, the bore being closed toward the shank by an end wall 23. A slot 29' extends part way along bore 21 and has closed ends.

Slidable in bore 2'! is the shank portion 29 of a plunger 38 which has a foot or abutment portion 3| projecting beyond the head in the opposite direction from the shank. The foot 3| has, as here shown, an inward extension 32 and a flat forward surface 33. The trailing portion of the foot 3| is beveled to provide a cam surface 34. Shank 29 is provided with a through transverse bore which is threaded and receives a screw 35' whose head portion projects through slot 29'. Desirably the plunger 30 is yieldingly projected by a compression spring 35' disposed between the end of the shank and wall 28.

When the stop is to be inserted, the tool ll is threaded on nipple l4 while plunger M is manually retracted against the action of spring 36', this being conveniently accomplished by engaging the projecting end of the screw 35 with the thumb as the tool is held in the hand. The relation of parts is such that prior to the full reception of the nipple in the socket the plunger may be released to enable the abutment portion 3! to be projected into one of the recesses, as 19, Figures 1 and 2, a substantial distance. When turning force is now applied to the tool it is positively imparted to the stop by reason of the abutment of face 33 of the plunger with wall 2| of the recess. When the stop has been completely turned home, the tool is reversely rotated, the cam surface 34 of the plunger riding over the edge of the recess walls as at 22 so that the tool is readily removable.

If the tool is to be used for the removal of a stop it is only necessary to reverse the position of the plunger in bore 2'5. This is done by removing screw 35, turning the plun er through 180 and replacing the screw. With this arrangement the tool may be threaded on nipple M, the

cam face 34 eventually riding over the top edges of the recess walls as at 2!. When the nipple has been sufficiently received in the socket the tool is reversely rotated causing the flat face 333 of the plunger to abut one of the recess walls 22, whereupon the stop is forced to follow the tool.

While the stop might be provided with only one recess, two are preferred, since it gives a more balanced appearance and since in some cases it may be desired to apply torque at both sides of the stop.

The modified form of tool shown in forms 4 to 6 comprises a shank and a coaxial cylindrical head 35 provided with a coaxial threaded socket 31. At one edge the head 35 is provided with a non-round (for example, rectangular) axially extending groove which is open at its end opposite the shank and closed by a wall'39 at its other end. A plunger 4% has a shank received in and mating with the groove or guideway 33 so as to be non-rotatable therein, the plunger having a projecting foot or abutment portion' ll generally similar to that of theform first described and entirely similar in function. A ring 4?. embraces the head 36 and is secured thereto by screws 53. The ring is provided with an internal annular groove 44 in which is received a pin 45 which is fixed in the shank of plunger id. Ring 42 serves to hold the plunger in the groove 38 and the groove 44 in conjunction with pin 15 limits the reciprocating range of the plunger; The plunger is preferably yieldingly projected by a spring 46 disposed between the end of the plunger shank and wall 39.

The too] just described is used in exactly the same manner as the tool of Figures 1 to 3. If desired, two plungers may be provided at diametrically opposite points for simultaneous coaction with diametrically opposite side walls of the stop recess.

It will be understood that the invention is not limited to the details of form and arrangement shown and described and that variations in these matters may be made without departure from the following claims.

I claim:

1. A tool for use in turning corporation stops, said stops including a body and threaded nipples projecting from opposite ends of said body, said body including a side portion adjacent one of said nipples faced oppositely to the threading direction of the latter, said tool comprising a shank portion and a head portion at one end of the shank portion having a threaded socket therein coaxial with said shank portion and engageable with said one of said nipples, and a retractible abutment projectable in the axial direction of the tool beyond the head portion in the opposite direction from said shank portion, said abutment being constituted by a plunger reciprocable in an axially extending guideway in said head portion radially outwardly of said socket; said abutment being maintainable in retracted relation so thatits leading edge will clear said side portion as the socket is threaded on said one of said nipples and being then projectable so that its leading edge will firmly engage said side portion as threading of the socket on said one of said nipples continues and prior to such full reception of said one of said nipples in said socket as would cause jamming, whereby to positively transmit rotation of the tool to the stop in the inserting direction of the latter; said abutment due to its retractibility riding over any body portion encountered by it upon reverse rotation of the tool relative to the stop so that the tool is readily removable from the stop.

2. A tool for use in turning a corporation stop, said stop comprising a body and threaded nipples projecting from opposite ends of said body, said tool comprising a shank portion and a head portion atone end of said shank portion having a threaded socket therein coaxial with said shank portion and engageable with one of said nipples, an axially extending guideway in said head portion radially outwardly of the socket, and a plunger reciprocable in said guideway between limit positions and when in one limit position projecting beyond the head portion in the opposite direction from said shank portion, said plunger in retracted position permitting the threading of said one of said nipples in said socket and then, in projected position, engaging a portion of thestop body to transmit rotation of the tool in one direction to the stop with said one of said nipples less than fully engaged in said socket, the outer end of said plunger having a cam' surfaceadapted to ride over the cam body upon reverse rotation of the tool relative to the stop, and the plunger being reversible so that it may be rendered effective either for stop insertion or removal.

' 3.-A tool according to claim 1 wherein the plunger has a round shank portion in said guideway, wherein a slot having closed ends extends longitudinally of said guideway, and wherein a screw' is threaded'into said round shank portion and extends into said slot whereby toprevent rotation of said plunger and to limit the re ciprocation thereof.

4. A tool for use in turning a corporation stop, said stop comprising a body and threaded nipples projecting from opposite ends of said body, said tool comprising a shank portion and a head portion at one end of said shank portion having a.

threaded socket therein coaxial with said shank portion and engageable with one of said nipples, an abutment carried by said head portion movable between a retracted position and a projected position in which latter it projects substantially beyond said head portion in the opposite direction from said shank portion, said abutment in retracted position permitting the threading of said one of said nipples in said socket and then,

in projected position, engaging a portion of the WALTER J. BOWAN. I 

